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Chapter 9: Troubleshooting
To perform the (Check 4) Reactor Leak Check
This test checks for leaks in the same area as the Reactor Bypass Leak Check and checks for leaks at the reactor
tube. This flow path is highlighted in
1.
Ensure that the NDIR is plugged, as described in the Before You Begin section.
2.
Press the Reactor button to start the test. The Analyzer closes the following valves: V1-R, V3-R, V6-R,
V7-R and V7-SH. The Analyzer opens valves V2-R, V4-R and V5-R.
The Gas Control Module pressurizes the lines for 24 sec., and then valve V1-GD closes to trap the
pressure in the area being tested. The system holds for an additional 15 sec. If a major leak is detected
at this time, an "Analyzer failed to pressurize" warning appears and the test will end. During this 39-sec.
pressurization period, the timer remains at 00:00 and the analyzer displays "Pressurizing . . ." under the
timer.
3.
When the system passes pressurization, the leak check begins, the timer starts, and "Testing . . ."
appears under the timer. The test lasts for 60 sec. The test passes if the drop in pressure is <= 2.0 psi.
4.
If the test fails, but the Analyzer passed the Gas Manifold, Reactor Inlet, and Reactor Bypass Leak
Checks, then check the O-rings on the seals in V4-R and V5-R. Replace the seals, if necessary. If the
seals are good, then check the reactor tube fittings on the V4-R and V5-R. A hole in the reactor will also
cause a leak.
5.
To continue the series of gas leak checks, leave the plug on the NDIR end cap outlet gas line and
proceed to the next section,
remove the plug for normal operation.
GE Analytical Instruments ©2016
Figure
104.
"To perform the (Check 5) Reactor Outlet Valve Leak Check."
234 of 270
Otherwise,
DLM 68100-09 EN Rev. A
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